Try checking what's in the logs.

You can activate 'Developer tools' plugin and enable 'Error log' option. Then repeat the update process and see what's in the logs yourapp/admin/develop_tools/error_log

Also look in your browser's console via DevTools (Inspect, or Ctrl+Shift+I). 
There may also be error information there.

Nikolai, thanks again. So you're saying that the administrator created when installing Elgg (me) is automatically given a user profile page like every other user who registers? So, how is he able to stop other users from becoming administrators themselves when they register and from accessing certain privileges/pages/events/functions etc? I am having a tough time wrapping my head around how the platform works. Thanks again for your time.

I won't make a tutorial here, you can always ask a more specific question here.

As for administrator privileges, everything is controlled through the user entity menu (3 vertical dots)

With 'Developer tools'  plugin activated, you can examine all the metadata and attributes of any entity via 'Entity explorer' tool.

You can also use 'Login as' feature.

Sorry to have upset you. I will just move on. Thanks

Welcome to Elgg!

Look at these plugins:

• Spam Login Filter https://github.com/rohit1290/spam_login_filter
• Spam Throttle https://github.com/rohit1290/spam_throttle
• IP Tracker https://github.com/rohit1290/tracker

Nikolai, thanks I'll look them over. I am currently working on a plugin based on an older wp plugin that I updated myself which works flawlessly still to this day. But I will have a try with your suggestions also to see if they meet with my needs.

i dont know where i must change it

Edit this on:

background-color: transparent;

Don't forget run 'Upgrade' via admin panel to clean the caches

ok very thanks